In-situ chemical barrier and method of making
Patent 5857810 Issued on January 12, 1999. Estimated Expiration Date: 
February 27, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 27, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1430306 3407605 System for placing freshly mixed concrete on the seafloor Composition for improving strength of soft ground containing organic matter, and method of improving strength of soft ground by utilizing said composition Method for forming a fluid barrier by means of sloping drains, more especially in an oil field Method of rendering soils impervious Slurry mixing apparatus Method of isolating contaminated geological formations, soils and aquifers Waste disposal in hydraulically fractured earth formations Grouting composition and method Patent #: 5389146 InventorsAssigneeApplicationNo. 807616 filed on 02/27/1997US Classes:405/263, Chemical405/129.35, Earthen formation405/129.45, Waste barrier, containment, or monitoring405/129.65, With treatment588/250, Geologic, marine, or extraterrestrial storage and containment (e.g., tectonic, volcanic, deep natural, manmade earth cavity, submarine placement sites, lunar, earth orbital, and solar placement, etc.)588/260With sensing, detecting, or monitoringExaminersPrimary: Taylor, Dennis L.Attorney, Agent or FirmInternational ClassB09B 003/00ClaimsWe claim: 1. A method of injecting solid particles into subsurface soil, comprising the steps of: (a) making a colloid suspension having said solid particles in water; (b) adding a surfactant to said suspension and further adding a non-Newtonian fluid thereby making a non-Newtonian stable colloid suspension; and (b) injecting the stable colloid suspension into the subsurface soil through a well at a flow rate sufficient to move the stable colloid suspension through the subsurface sediment and without substantially resuspending indigenous soil particles in the subsurface soil. 2. The method as recited in claim 1, wherein said solid particles are selected from the group of zeolite minerals, minerals modified with surface-bound chelates and quaternary amines, organic peat, limestone, titanium hydroxide, titanium oxide, fly ash, saw dust, lignite, hematite, magnetite, goethite, hydroxyapatite, andisols for anions, and zero-valent iron (Fe0). 3. The method as recited in claim 2, wherein said particles have a size less than 5 micron. 4. The method as recited in claim 3, wherein said particles have a size of about 1 to 2 micron. 5. The method as recited in claim 1, wherein the colloid concentration is less than about 0.26 vol %. 6. The method as recited in claim 1, wherein an amount of the colloid added to the subsurface soil is less than about 5 vol % of a pore space. 7. The method as recited in claim 6, wherein the amount of the colloid added to the subsurface soil is less than about 3 vol % of a pore space. 8. The method as recited in claim 1, wherein a surfactant is added to the stable colloidal suspension. 9. The method as recited in claim 8, wherein a concentration of the surfactant is less than a critical micelle concentration. 10. The method as recited in claim 1 wherein the amount of said solid particles is about 0.2% (w/w). 11. The method as recited in claim 1, wherein the amount of surfactant is about 0.001% (w/w). 12. The method as recited in claim 1 wherein said surfactant is an anionic surfactant. 13. The method as recited in claim 1, wherein said solid particles are Fe0. 14. The method as recited in claim 1, wherein said non-Newtonian fluid is a shearthinning fluid. 15. The method as recited in claim 1, wherein said non-Newtonian fluid is a soluble polymeric solution. 16. The method as recited in claim 15, wherein said soluble polymeric solution is selected from the group of vinyl polymer, polyacrylamide, gum xanthan, guar gum, caroxymethylcellulose and combinations thereof. 17. A method of making a subsurface chemically reactive zone, comprising the steps of: (a) making a colloid suspension having said solid particles in water; (b) adding a surfactant to said suspension and further adding a non-Newtonian fluid thereby making a non-Newtonian stable colloid suspension; and (b) injecting the stable colloid suspension into the subsurface soil through a well at a flow rate sufficient to move the stable colloid suspension through the subsurface sediment and without substantially resuspending indigenous soil particles in the subsurface soil. 18. The method as recited in claim 17, wherein said reactive solid particles are selected from the group of zeolite minerals, minerals modified with surface-bound chelates and quaternary amines, organic peat, limestone, titanium hydroxide, titanium oxide, fly ash, saw dust, lignite, hematite, magnetite, goethite, hydroxyapatite, andisols for anions, and zero-valent iron (Fe0). 19. The method as recited in claim 18, wherein said reactive solid particles have a size less than 5 micron. 20. The method as recited in claim 19, wherein said reactive solid particles have a size of about 1 to 2 micron. 21. The method as recited in claim 17, wherein the reactive solid particle concentration is less than 3 wt %. 22. The method as recited in claim 17, wherein an amount of the reactive solid particles added to the subsurface soil is less than about 5 vol % of a pore space. 23. The method as recited in claim 22, wherein the amount of the reactive solid particles added to the subsurface soil is less than about 3 vol % of a pore space. 24. The method as recited in claim 17, wherein a surfactant is added to the stable colloidal suspension. 25. The method as recited in claim 24, wherein a concentration of the surfactant is less than a critical micelle concentration. 26. The method as recited in claim 17 wherein the amount of said solid particles is about 0.2% (w/w). 27. The method as recited in claim 17, wherein the amount of surfactant is about 0.001% (w/w). 28. The method as recited in claim 17 wherein said surfactant is an anionic surfactant. 29. The method as recited in claim 17, wherein said solid particles are Fe0. 30. The method as recited in claim 17, wherein said non-Newtonian fluid is a shearthinning fluid. 31. The method as recited in claim 17, wherein said non-Newtonian fluid is a soluble polymeric solution. 32. The method as recited in claim 31, wherein said soluble polymeric solution is selected from the group of vinyl polymer, polyacrylamide, gum xanthan, guar gum caroxymethylcellulose and combinations thereof. Other References
Field of SearchCementitious (e.g., grouting)FLUID CONTROL, TREATMENT, OR CONTAINMENT Filling substerranean cavity (e.g., underground wall) Using specific materials Cement or consolidating material contains inorganic water settable and organic ingredients Soil, diatomaceous earth, clay, slate or shale containing, or material for treating soil or earth (e.g., soil stabilization, etc.) SOIL STABILIZATION |
